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서태평양 Lomilik 해저산 퇴적환경 특성

Geophysical and Sedimentological Characteristics of Lomilik Seamount, West Pacific

  • 이현복 (한국해양연구원 해양자원연구본부) ;
  • 오재경 (인하대학교 해양과학과) ;
  • 박정기 (한국해양연구원 해양자원연구본부) ;
  • 지상범 (한국해양연구원 해양자원연구본부) ;
  • 김종욱 (한국해양연구원 해양자원연구본부) ;
  • 문재운 (한국해양연구원 해양자원연구본부) ;
  • 남상헌 (한국해양연구원 극지연구소)
  • 발행 : 2004.06.30

초록

Lomilik Seamount in the west Pacific was seismically surveyed and photographed to illuminate the bottom topography, the condition of manganese crust, and the characteristics of sedimentary environment. Lomilik Seamount has a NW-SE elongated bottom topography with steep slopes in the NESW direction part. Even though the steep slopes of the seamount are devoid of deposits, the summit area and gentle slope of the seamount are covered with thick deposits. The seismic data indicate that Lomilik Seamount is a flat-topped and step-faulted guyot of volcanic origin. Deep-sea camera photographs show that much of the seafloor is rippled in symmetrical and asymmetrical patterns. The traces of biological activity were distinct on gentle seafloor suggesting the low-energy bottom conditions. Some photographs also show outcrops encrusted with manganese crusts. Sedimentary environments in the Lomilik Seamount appear have been governed by regional morphology and strong bottom current.

키워드

참고문헌

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